AS5245 AMSCO [austriamicrosystems AG], AS5245 Datasheet - Page 29

• Manufacturer Part Number: AS5245
• Manufacturer: AMSCO [austriamicrosystems AG]

AS5245
Data Sheet - A p p l i c a t i o n I n f o r m a t i o n
Timing Tolerance over Temperature.
to ±10%. Generally, the timing tolerance has no influence in the accuracy or resolution of the system, as it is used mainly for internal clock
generation. The only concern to the user is the width of the PWM output pulse, which relates directly to the timing tolerance of the internal
oscillator. This influence, however, can be cancelled by measuring the complete PWM duty cycle instead of just the PWM pulse.
9.7 AS5245 Differences to AS5045
All parameters are according to AS5045 data sheet except for the parameters shown below:
Table 15. Difference Between AS5245 and AS5045
www.austriamicrosystems.com/AS5245
Ambient temperature range
OTP programming options
Incremental encoder
Sampling frequency
Propagation delay
Building Block
Transition noise
(rms; 1sigma)
Pins 1 and 2
Data length
Resolution
Pin 12
Pin 6
12bits, 0.088º/step.
-40ºC to +150ºC
read: 18bits
(12bits data + 6 bits status)
OTP write: 18 bits
(12bits zero position + 6 bits mode selection)
MagINCn, MagDECn: same feature as AS5045,
additional OTP option for red-yellow-green magnetic
range
Pin3 (DTest1_A); Pin 4 (DTest2_B); Pin 6 (Mode_Index)
2x1024 ppr (12-bit)
2x256 ppr low-jitter (10-bit)
MODE_Index pin selects fast or slow mode in the
default configuration. In case of incremental mode, the
fast mode is selected and the pin is configured as
output.
PWM output: frequency selectable by OTP:
1µs / step, 4096 steps per revolution, f=244Hz 2µs/
step, 4096 steps per revolution, f=122Hz
selectable by MODE input pin:
2.5kHz, 10,4kHz
384µs (slow mode)
96µs (fast mode)
0.03 degrees maximum (slow mode)
0.06 degrees maximum (fast mode)
PPTRIM; programming voltage 3.3V – 3.6V <70ºC;
3.5V – 3.6V >70ºC;
52-bit serial data protocol; CSn, PDIO and CLK
The internal RC oscillator is factory trimmed to ±5%. Over temperature, this tolerance may increase
AS5245
Revision 1.3
12bits, 0.088º/step.
-40ºC to +125ºC
read: 18bits
(12bits data + 6 bits status)
OTP write: 18 bits
(12bits zero position + 6 bits mode selection)
MagINCn, MagDECn
Not used
Pin 3: not used
Pin 4:not used
MODE_Index pin selects fast or slow mode in the
default configuration.
PWM output: frequency selectable by OTP:
1µs / step, 4096 steps per revolution, f=244Hz
2µs/ step, 4096 steps per revolution, f=122Hz
selectable by MODE input pin:
2.5kHz, 10,4kHz
384µs (slow mode)
96µs (fast mode)
0.03 degrees maximum (slow mode)
0.06 degrees maximum (fast mode)
EasyZap; programming voltage 7.3V – 7.5V; Csn;
Prog and CLK; 16-bit (32-bit) serial data protocol;
AS5045
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